Now that's a toy you don't stumble across very often! Not sure what I'd do with it, but others may have a use: https://www.radiacode.com/
Radiacode – Portable Radiation Detector, Dosimeter & Spectrometer

Radiacode is a fast, portable radiation detector, dosimeter, and spectrometer with real-time analysis. 20× faster than Geiger counters, it identifies isotopes, tests food for contamination, and supports research and safety.

@cstross I do radiological surveys for work and we've started using RadiaCodes for some of our projects. There are a lot of digital dosimeters and detectors on the market that seem sketchy at best, but this is the first one I've considered getting for myself.